Process for impregnating wood

Details Process for impregnating wood Process for impregnating wood

1973-06-25

1976-06-29

Pianalto, Bernard D.

Coating processes

With post-treatment of coating or coating material

Coating material recirculation or regeneration

427377, 427397, 427440, C08J 708

Patent

active

039670112

ABSTRACT:
An improved method of impregnating wood with a preservative is achieved by using halogenated solvents as carriers for the preservative or other wood treating chemicals and removing the carrier from the treated wood by treatment with steam. Benefits derived from this process include fewer steps, substantially complete removal of solvent, and the production of a natural appearing wood product having a surface suitable for painting.

REFERENCES:
patent: 2020172 (1935-11-01), Cotchett
patent: 2650885 (1953-09-01), Hudson
patent: 2652347 (1953-09-01), Hudson
patent: 2860070 (1958-11-01), McDonald
patent: 3200003 (1965-08-01), Bescher
patent: 3597257 (1971-08-01), Dunn
patent: 3685959 (1972-08-01), Dunn et al.
"Chemical Engineering Handbook", John H. Perry ed., 3rd Edition, 582, McGraw Hill, N.Y., 1950.
American Wood-Preservers, Assoc. "Drying Lumber by the Vapor Process", Monie S. Hudson, pp. 209-218.
Ind. and Eng. Chem., "Solvent Recovery from Pentachlorophenol- Treated Wood," vol. 45, No. 7, July, 1953, pp. 1576-1583.

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